{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["process parameter", "enabling technology", "material", "manufacturing standard", "concept or principle", "machine or equipment"], "input": "narrow-gap variants of gaB-tungsten arc welding ( GTAW ) and submerged arc welding ( SAW ) , as well as a technology that might be applied in the future ( electron beam welding ) ."}
{"process parameter": [], "enabling technology": [], "material": ["as", "be"], "manufacturing standard": [], "concept or principle": ["technology"], "machine or equipment": []}